:root{--sd-bg: #f5f7fa;--sd-surface: #ffffff;--sd-card: #ffffff;--sd-text: #303133;--sd-text-strong: #1f2d3d;--sd-muted: #909399;--sd-border: #dcdfe6;--sd-border-strong: #c0c4cc;--sd-shadow: rgba(0, 0, 0, .08);--sd-accent-1: #409eff;--sd-accent-2: #66b1ff;--sd-accent-ink: #ffffff;--sd-radius-sm: 4px;--sd-radius-md: 8px;--sd-radius-lg: 12px;--sd-radius-full: 9999px;display:block;padding:2.5rem 1.25rem;overflow:auto;background:var(--sd-bg);font-family:var(--sd-font-family);color:var(--sd-text);--sd-font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "SF Pro Text", "Segoe UI", sans-serif}body,html{margin:0;padding:0;min-height:100vh;background-color:var(--sd-bg);color:var(--sd-text);font-family:var(--sd-font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}.sd-container{max-width:1080px;margin:0 auto;background:var(--sd-surface);border-radius:var(--sd-radius-lg);padding:1.8rem 2rem;box-shadow:0 18px 40px var(--sd-shadow),0 0 0 1px #ffffffd9}@media (max-width: 860px){.sd-container{padding:1.4rem 1.25rem}}.sd-title{margin:.9rem 0 .4rem;font-size:2.2rem;font-weight:800;letter-spacing:-.02em;color:var(--sd-text-strong);line-height:1.2}.sd-subtitle{display:block;margin-top:.35rem;font-size:1.1rem;font-weight:600;color:#2f3331d9}.sd-lead{margin:.4rem 0 1rem;font-size:1.05rem;line-height:1.75;color:#2f3331c7;max-width:52rem}.sd-section-title{margin:0 0 .6rem;font-size:1.05rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--sd-muted)}.btn{border-radius:var(--sd-radius-full);padding:.55rem 1.2rem;font-size:.95rem;font-weight:600;border:none;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;transition:transform .2s,box-shadow .2s;box-shadow:0 0 0 1px var(--sd-border)}.btn:hover{transform:translateY(-1px)}.btn.primary{background:linear-gradient(145deg,var(--sd-accent-1),var(--sd-accent-2));color:var(--sd-accent-ink);box-shadow:0 12px 22px #28373233,0 0 0 1px #ffffffd9}.btn.primary:hover{box-shadow:0 14px 26px #28373240,0 0 0 1px #ffffffe6}.btn.ghost{background:#ffffffc7;color:var(--sd-text)}.btn.ghost:hover{background:#fffffff2}.btn.small{padding:.35rem .8rem;font-size:.85rem}.sd-grid{display:grid;gap:.9rem;grid-template-columns:repeat(3,minmax(0,1fr))}@media (max-width: 860px){.sd-grid{grid-template-columns:1fr}}.card{background:var(--sd-card);border-radius:var(--sd-radius-md);padding:1.1rem;box-shadow:0 12px 28px var(--sd-shadow),0 0 0 1px #ffffffd1;transition:transform .2s}.card:hover{transform:translateY(-2px);cursor:pointer}.card h3{margin:0 0 .4rem;font-size:1.05rem;font-weight:700;color:var(--sd-text-strong)}.card p{margin:0;color:#2f3331bf;line-height:1.65;font-size:.95rem}.sd-badge{display:inline-flex;padding:.25rem .7rem;border-radius:var(--sd-radius-full);font-size:.78rem;letter-spacing:.04em;font-weight:600;background:#ffffffbf;box-shadow:0 0 0 1px var(--sd-border);color:var(--sd-muted)}.sd-meta{display:flex;gap:.8rem;flex-wrap:wrap;color:#2f3331b8;font-size:.86rem;font-weight:500}.sd-section{margin-top:1.4rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,.7)}.sd-footer{margin-top:1.6rem;padding-top:1.2rem;border-top:1px solid var(--sd-border);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;align-items:center}@media (max-width: 860px){.sd-footer{flex-direction:column;align-items:flex-start;gap:1.5rem}}.sd-link{color:#2f3331bf;text-decoration:none;font-size:.9rem;font-weight:500}.sd-link:hover{color:var(--sd-text-strong);text-decoration:underline}